70 
WISEMAN-DOWNS COMPANY, INC 
BALTIMORE 
JOHN DEERE MODEL L.C. TRACTOR DISK HARROW 
STRONGER AND BETTER THAN EVER 
Now, the John Deere Model L Tractor Disk Harrow is stronger and better than ever. 
In addition to all the good qualities embodied in the original Model L, new and important improvements have 
been made which make more effective the exclusive working features that have long identified the Model L as an 
outstanding favorite. 
A wider and heavier frame; angle iron main frame braces instead of flat bars; pivot connection between the main 
frame and gangs; new pivoted yoke and draw-bar guide; increased carbon in steel wearing parts; heat-treated disk 
blades—these are some of the improvements which combine to make a stronger and heavier harrow that does better 
work and lasts longer. 
Heat-Treated Alloy Steel Disk Blades 
The disk blades now furnished on all John Deere Disk Harrows are made of long-wearing alloy steel which is used 
extensively in the manufacture of automobile parts that are under heavy strain. The blades are carefully heat- 
treated after they are formed. This gives an even stronger blade than the high carbon steel disks which have here¬ 
tofore been furnished on John Deere Harrows. 
The heat-treated blade is unusually close grained, which combines hardness with toughness. Thus the blade 
holds its edge, stays sharp and lasts longer, especially when working in tough, hard or stony soil. 
All of the superior points of construction which have contributed to the remarkable success and efficiency of the 
Model L have been retained—the convenient angling cranks, automatic yielding lock coupling, aligning device, and 
the flexibility of the harrow itself—all of which make good work certain under varying field conditions. 
Prices on Model L Tractor Disc Harrows 
24-16—6 ft. Cut. $110.00 28-16—7 ft. Cut. $118.00 
24-18—6 ft. Cut. 120.00 28-18—7 ft. Cut. 130.00 
JOHN DEERE MODEL B DISK HARROW 
John Deere Model B 7-foot Harrow 
. If every field were as smoth as a board floor, flexibility would be of no advantage in a disk harrow. But the truth 
is there is no field condition in which a flexible harrow will not do better work than a rigid one. A disk harrow must 
be flexible to do the best work. 
Independent action of the gangs is largely responsible for the flexibility of the Model B. This construction is 
of great value because it allows one part of the harrow to pass over an obstruction in the field without interfering 
with the rest of the machine. A rigid harrow, under the same conditions, is likely to leave some of the land un¬ 
cultivated. 
Separate angling levers enable the operator to give the gangs the proper angle with relation to each other when 
working on hillsides, so the harrow does not crowd in any direction. 
When overlapping, with one gang running in hard ground and the other gang in soft ground, the single-lever bar- 
row tends to crowd towards the soft ground, due to the greater resistance offered by the hard ground. This fault is 
readily overcome with the Model B by giving the gang working in soft ground slightly more angle. 
Spring Pressure and Third Lever Have Many Advantages 
The control of the Model B, so that it will penetrate evenly its entire width in any kind of ground, is made ex¬ 
tremely simple and positive by the spring-pressure third lever feature. 
The Model B has a pivoted yoke through which the drawbars pass. This yoke is controlled in its up-and-down 
movements by a third lever and powerful pressure spring. When this third spring-pressure lever is pulled back, 
the inner ends of the gang are forced down to work in depressions and dead furrows, or to give extra pressure in hard 
ground. 
Prices on Model B Disc Harrows 
8-16—4 ft. Cut.$46.00 
8-18—4 ft. Cut. 49.00 
Fore Carriages 
10-16—5 ft. Cut. $50.00 
10-18—5 ft. Cut. 53.00 
.$ 10.00 
Best by Every Test 
